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@uiten tats @anni @fitta LUCIUS CARRIER, OF PROVIDENCE, RHODE ISLA-ND.

Letters Patmt No. 67,022, dated July 23, 1867; antedatrd July 19, 1867. i

IMPROVEMENT IN PASTEBOARD BOXES.

@lille clgehule referat tu it tigen lettus gaten nu mating putt .uf flic ramt.

'IO ALL WHOM IT MAY CONCERN:

Be it known that I, LUCIUS CARRIER, of the city and county ot' Providence, and State ot' Rhode Island, have invented a new and useful Improvement in making Boxes of Pasteboard, Thin Wooden Boards, or splints, 82e.; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings making part of this specification, in which- Figure l is a perspective view of a. box made in accordance with my improved Inode.

Figure 2 represents theimproved mode of cutting and uniting the edges of parts oi' folded pasteboard, die., to convert the same into a durable box.

Similar lettersindicate corresponding parts in all the gures.

By the mode heretofore practised in making pasteboard boxes, a square piece was cut from euch corner i of the piece of pasteboard, and the rectangular flaps or pieces thus formed upon the four sides were folded against each other at their edges, and conned in such position by pasting paper inside and out. By this mode the corners of the'box are only formed of the paper, and whenever the sides are subjected to slight strains the box rips down at the corners, and is thus rendered useless. This diiiiculty has been remedied in some measure by pasting patches of muslin over the corners of the box, under the finishing-paper, and also by removing only one-half of the square piece fr. the corners ofthe box, and folding the remaining half outside of the adjoining side, and securing these parts in this position by pasting paper thereon, as described. By this mode, however, the corners of the box depend very much upon the tenacity of the paper covering for their strength, und if the part that laps upon the outside is not broken at the bend of the corner so that it will be sufficiently tlexible, the overlapping will separato from the contiguous side, and thereby weaken the corner thus formed and prepare it to tear open with the first strain that is put upon it. Y

My improvement is intended to wholly remedy this diiliculty of 'tearing down at the corners, and consists in cutting that portion of the material which is to form the sides of the box in such a manner as to form a flap or free strip which can be folded or bent at right angles toform the corner of the box, and which is otherwise so cut as to interlock with .the adjoining edge by means of dovc`tailing straps cut in the two adjoining parts, so that the corners of the box may be of the same thickness and strength as any other portion of the box that the sides of the box may be pf the same thickness all around, and that the strength of the dove-tail joint shall depend upon the firmness of the material of the side instead of upon any covering of' cloth or paper pasted thereon'. Y

In the drawings, a, tig. 2, is the iiap or free strip, which is cut free from the corner of the pasteboard by means of a cutter of its exact counterpart in form, which cuts out a square piece of corresponding area, next to the corne-r square, at the same time forming a tongue or dove-tail, s, which exactly tits the correspondingshaped opening or socket s in the said flap a. This tlap is then bent squarely at the line e e, and at the lines d d, and the parts folding together on these lines, the fold or bend at e e forming the corner of the box, and the free Hap a, uniting by means ofthe dove-tail strap to the side E of the box, which forms a full and complete side, and a. corner of equal strength to any other part of the box. Over this dove-tail joint the paper may be pasted to conceal thejoint and render the box ornamental, as well as to keep the two parts of thcjoint connected together, but without depending upon the strength ot' the paper to strengthen and support the sides or substantially ass-described for the purpose set forth.

corners ofthe box.

Having described my invention, what I claim, and desire to secure by Letters Patent, is

Making the sides and corners of pasteboard and similar boxes by cutting and bending the flap a or its equivalent to form the corner, and uniting the said flap with the adjoining side by dove-tailing the two parts,

LUCIUS CARRIER.

Witnesses:

Isaac A. BROWNELL,

E. L. BROWNELL. 

